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Gstallation
EIA (RS-232C) SIGNALS:
Frame Ground (FG)
Connects to the unit frame and the earth ground conductor of the AC power cord.
Transmitted Data (TXD)
. . . . . . . . . . . . . . . . . . . . . . . . . . ..“...~.....................~........................ (output)
Conveys signals from the unit to the printer (or terminal). A “Mark” condition is
held unless data or BREAK signals are being transmitted.
Received Data (RXD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(input)
Conveys signals from the printer (or terminal).
Request To Send (RTS)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (output)
This lead is held ON whenever DSR is ON.
Data Set Ready (DSR)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (input)
An ON condition of circuit DSR indicates the printer (or terminal) is ready. Cir-
cuit DSR ON does not indicate that communication has been established with the
printer.
Signal Ground (SG)
Connects to the DC ground of the unit for all interface signals.
Data Terminal Ready (DTR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(output)
This signal line is turned ON by the unit to indicate that it is ON LIN’E. Circuit
DTR ON does not indicate that communication has been established with the
printer (or terminal). It is switched OFF when the unit is OFF LINE.
Data Carrier Detect (DCD)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (input)
The ON condition is an indication to data terminate (DTE) that the carrier signal is
being received.
Installation 2-17